Problems

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Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 7189 1046 15% 0.00 1386 695 50% 6.9
10 Kinds of People 13127 2702 21% 0.01 2291 1561 68% 5.3
2048 7129 3299 46% 0.00 3207 2726 85% 2.6
3D Printed Statues 7915 3652 46% 0.00 3389 3041 90% 2.0
3D Printer 601 115 19% 0.00 229 91 40% 8.4
3-Sided Dice 2113 187 9% 0.00 343 128 37% 8.6
4 thought 7107 2376 33% 0.00 2389 1990 83% 2.8
A1 Paper 4623 1361 29% 0.00 1343 1066 79% 3.6
Aaah! 24616 11484 47% 0.00 10315 9604 93% 1.6
Abandoned Animal 1460 307 21% 0.03 373 270 72% 5.1
ABC 10712 4841 45% 0.00 4614 4194 91% 1.8
Ab Initio 503 97 19% 0.10 90 59 66% 8.2
Above Average 6508 2719 42% 0.00 2674 2409 90% 1.9
A+B Problem 6914 674 10% 0.03 984 326 33% 8.3
A Brief Gerrymander 190 42 22% 0.15 44 27 61% 8.3
Abstract Art 239 71 30% 0.00 71 54 76% 5.4
Absurdistan Roads II 535 195 36% 0.00 192 131 68% 6.8
Absurdistan Roads III 1332 371 28% 0.02 358 276 77% 5.5
Access Points 282 111 39% 0.01 105 78 74% 6.3
A Classy Problem 8156 2071 25% 0.01 1811 1391 77% 4.6
ACM Contest Scoring 5804 3645 63% 0.00 3220 3037 94% 1.5
Adding Words 8805 2066 23% 0.00 2031 1551 76% 4.1
A Different List Game 6281 430 7% 0.00 782 158 20% 9.2
A Different Problem 26239 9829 37% 0.00 9073 7871 87% 2.4
Adjoin the Networks 1700 459 27% 0.00 407 320 79% 5.5
Administrative Difficulties 987 227 23% 0.03 244 166 68% 6.2
Advanced Causal Measurements 57 18 32% 0.10 22 18 82% 6.3
Adventure Begins 219 69 32% 0.06 78 58 74% 4.1
Adventures in Moving -- Part IV 892 262 29% 0.00 231 199 86% 4.3
A Favourable Ending 1380 359 26% 0.00 335 251 75% 4.7
A Feast For Cats 1822 634 35% 0.00 428 360 84% 4.3
A Flea on a Chessboard 295 66 22% 0.01 80 59 74% 5.0
Air Conditioned Minions 4364 1204 28% 0.00 1273 952 75% 3.8
Airline Hub 1703 315 18% 0.01 342 192 56% 6.8
Airport Coffee 803 173 22% 0.09 165 119 72% 7.2
Airport Construction 3254 416 13% 0.02 334 178 53% 7.4
Airport Logistics 49 12 24% 0.00 18 12 67% 7.4
Airports 379 107 28% 0.11 111 79 71% 6.5
Akcija 6198 2741 44% 0.00 2495 2212 89% 2.0
Aladin 749 75 10% 0.10 120 28 23% 8.3
Alchemy 98 16 16% 0.02 29 16 55% 8.7
Alea iacta est 32 13 41% 0.34 17 13 76% 6.9
Alice in the Digital World 2749 746 27% 0.01 719 568 79% 3.9
Alien Codebreaking 145 9 6% 3.23 26 7 27% 8.8
Alien Numbers 1993 1032 52% 0.00 1004 911 91% 2.0
A List Game 7210 2112 29% 0.00 2026 1701 84% 3.1
All about that base 2633 1034 39% 0.00 1007 844 84% 2.9
All Different Directions 1089 460 42% 0.00 431 374 87% 2.7
Allergy Test 436 123 28% 0.00 137 70 51% 7.8
All Friends 829 158 19% 0.00 149 77 52% 8.9
All Just A Dream 1666 384 23% 0.05 265 185 70% 6.7
All Pairs Shortest Path 7855 1393 18% 0.02 951 670 70% 5.8
Almost Perfect 6542 1505 23% 0.00 1615 1252 78% 3.7
Almost Union-Find 5750 1026 18% 0.02 918 530 58% 6.6
Alphabet 1257 614 49% 0.00 619 523 84% 3.1
Alphabet Animals 955 343 36% 0.01 349 287 82% 2.5
Alphabet Spam 6743 4267 63% 0.00 3425 3295 96% 1.3
Alternative Bracket Notation 203 84 41% 0.00 90 74 82% 5.5
Altruistic Amphibians 363 92 25% 0.24 91 65 71% 5.0
Amalgamated Artichokes 3514 1579 45% 0.01 1432 1244 87% 2.8
Amanda Lounges 1357 375 28% 0.03 348 272 78% 5.6
A Mazing! 2404 518 22% 0.09 246 186 76% 5.1
Amazing Adventures 277 74 27% 0.02 84 57 68% 5.8
Amazing Race 275 75 27% 0.39 83 60 72% 6.6
Ambiguous Result 230 55 24% 0.02 82 52 63% 7.8
Amsterdam Distance 1216 535 44% 0.00 576 475 82% 2.8
A Multiplication Game 640 199 31% 0.00 229 167 73% 4.9
Anagram Counting 3106 1196 39% 0.00 1151 959 83% 3.0
Andrew the Ant 234 67 29% 0.06 79 59 75% 5.6
A New Alphabet 9581 4330 45% 0.00 4046 3743 93% 1.8
An I for an Eye 529 125 24% 0.00 145 102 70% 5.1
Animal Classification 1538 353 23% 0.03 302 201 67% 6.7
An Industrial Spy 1405 736 52% 0.02 584 502 86% 3.2
Another Brick in the Wall 2810 1375 49% 0.00 1338 1222 91% 1.9
Another Candies 6934 1874 27% 0.00 1962 1614 82% 2.8
Another Dice Game 89 64 72% 0.00 58 53 91% 3.3
Another Query on Array Problem 1359 173 13% 0.05 292 125 43% 7.8
Antenna Placement 92 49 53% 0.00 30 26 87% 4.0
Anthony and Cora 782 204 26% 0.00 244 171 70% 5.4
Anthony and Diablo 2574 896 35% 0.00 891 767 86% 2.6
Antiarithmetic? 1178 221 19% 0.01 282 160 57% 7.2
Ants 3160 1398 44% 0.00 1119 981 88% 2.5
Apaxiaaaaaaaaaaaans! 11209 6844 61% 0.00 6117 5868 96% 1.3
Apostrophe Catastrophe 86 23 27% 0.00 24 17 71% 6.0
Appalling Architecture 468 132 28% 0.00 117 99 85% 3.7
Apparatus 650 166 26% 0.01 132 99 75% 5.7
Apple Market 461 93 20% 0.07 113 58 51% 8.2
Apples, Cherries, and Mangos 400 123 31% 0.02 125 91 73% 6.0
A Prize No One Can Win 1401 582 42% 0.00 533 470 88% 2.4
Aquarium Tank 469 129 28% 0.00 124 97 78% 5.2
Aqueduct Construction 171 66 39% 0.01 48 42 88% 5.7
A Question of Ingestion 1175 289 25% 0.00 273 207 76% 5.8
Arable Area 265 65 25% 0.04 65 42 65% 7.9
Arachnophobia 282 86 30% 0.14 79 65 82% 4.9
A Random Problem 265 65 25% 0.00 64 42 66% 5.6
A Rational Sequence 1552 527 34% 0.00 550 404 73% 4.6
A Rational Sequence 2 1943 1437 74% 0.00 1276 1224 96% 1.5
A Rational Sequence (Take 3) 771 637 83% 0.00 517 497 96% 1.7
Arbitrage? 1827 379 21% 0.02 283 229 81% 3.6
Arcade! 1205 219 18% 0.01 210 151 72% 6.0